20113+3550 HJ 1489AD

 
 
20h 11m 19.16s +35 49' 49.0" P.A. 52 sep 17.1 mag 9.69,9.88 Sp B2III-IV
 
 
Coord 2000
20113+3550
Discov num
HJ 1489
Comp
AD
Coord arcsec 2000
20 11 19.16 +35 49 49.0
Date first
1828
Date last
2018
Obs
21
Pa first
56
Pa last
52
P.A. Now (θ)
52°
Sep first
13.0
Sep last
17.1
Sep. Now (ρ)
17.1"
Mag pri
9.69
Mag sec
9.88
delta mag (ΔM)
0.19
Spectral class
B2III-IV (blue-white)
Pri motion ra
-005
Sec motion ra
-003
Pri motion dec
-008
Sec motion dec
-007
Notes
N (See Notes)
rPM=0.237 (< 0.3, Physical double)
This double is physical.
 
 
20113+3550 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20113+3550 BU 430 AB 1877 2001 18 24 1.1 9.69 10.37 0.68
Show 20113+3550 BU 430 AC 1926 2015 5 173 7.2 9.69 14.20 4.51
Show 20113+3550 HJ 1489 AD 1828 2018 21 52 17.1 9.69 9.88 0.19 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
51.6
Precise sep
17.128
Constellation
Cygnus
Tycho2
2683-03018-1
Gaia DR2
27281717888
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20113+3550 HJ 1489 AD 2005 17 51 17.3 9.69 9.88 B2III-IV D 201119.16+354949.0
20113+3550 HJ 1489 AD 2015 20 51 17.4 9.69 9.88 B2III-IV N 201119.16+354949.0
20113+3550 HJ 1489 AD 2018 21 52 17.1 9.69 9.88 B2III-IV N 201119.16+354949.0

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